diff --git a/gio/Gio.metadata b/gio/Gio.metadata
index f3f1e9265..3dbd2ccfd 100644
--- a/gio/Gio.metadata
+++ b/gio/Gio.metadata
@@ -76,6 +76,15 @@
   <attr path="/api/namespace/interface[@cname='GTlsServerConnection']/property[@cname='authentication-mode']" name="hidden">1</attr>
   <attr path="/api/namespace/interface[@cname='GVolume']" name="consume_only">1</attr>
   <attr path="/api/namespace/interface[@cname='GVolume']/method[@name='GetMount']" name="name">GetMountInstance</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusAuthObserver']" name="type">GDBusAuthObserver</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusCapabilityFlags']" name="type">GDBusCapabilityFlags</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusConnection']" name="type">GDBusConnection</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusConnectionFlags']" name="type">GDBusConnectionFlags</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusInterfaceInfo']" name="type">GDBusInterfaceInfo</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusProxyFlags']" name="type">GDBusProxyFlags</attr>
+  <attr path="/api/namespace/object/property[@type='GDbusServerFlags']" name="type">GDBusServerFlags</attr>
+  <attr path="/api/namespace/object/property[@type='GIoStream']" name="type">GIOStream</attr>
+  <attr path="/api/namespace/object/property[@type='GUnixFdList']" name="type">GUnixFDList</attr>
   <attr path="/api/namespace/object[@cname='GApplication']/signal[@cname='activate']" name="name">Activated</attr>
   <attr path="/api/namespace/object[@cname='GApplication']/signal[@cname='open']" name="name">Opened</attr>
   <attr path="/api/namespace/object[@cname='GDBusAuthObserver']/signal[@cname='authorize-authenticated-peer']" name="name">AuthenticatedPeerAuthorized</attr>